背景: 前端在查kylin时,scan timeout
CDH5.10 kylin1.6
错误如下:
2017-07-20 17:03:18,360 INFO org.apache.kylin.storage.hbase.cube.v2.coprocessor.endpoint.CubeVisitService: The cube visit did
not finish normally because scan num exceeds threshold
org.apache.kylin.gridtable.GTScanExceedThresholdException: Exceed scan threshold at 393073
at org.apache.kylin.storage.hbase.cube.v2.coprocessor.endpoint.CubeVisitService1CubeVisitService.callMethod(
原因3点:
说白了就是kylin关于hbase的3个参数:
kylin.query.scan.threshold
kylin.query.mem.budget
kylin.query.coprocessor.mem.gb
任何一个参数不达标都会报regionserver 都会报org.apache.kylin.gridtable.GTScanExceedThresholdException: Exceed scan threshold ,而前端查询kylin是timeout
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